For first time, emerald ash borer found in New York’s Franklin, St. Lawrence counties

(U.S. Forest Service photo)

The New York State Department of Environmental Conservation (DEC) announced that invasive pest emerald ash borer (EAB) has been found and confirmed for the first time in Franklin and St. Lawrence counties. DEC captured the insects in monitoring traps at the two locations.

DEC confirmed the specimens as adult EABs on Aug. 25. The invasive pest was found within a few miles of the Canadian border and may represent an expansion of Canadian infestations into New York.

Emerald ash borer (Agrilus planipennis) is a serious invasive tree pest in the United States, killing hundreds of millions of ash trees in forests, yards and along streets. The beetles’ larvae feed in the cambium layer just below the bark, preventing the transport of water and nutrients into the crown and killing the tree. Emerging adult beetles leave distinctive D-shaped exit holes in the outer bark of the branches and the trunk.

Adults are roughly 3/8 to 5/8 of an inch long with metallic green wing covers and a coppery red or purple abdomen. The pests may be present from late May through early September but are most common in June and July. Other signs of infestation include tree canopy dieback, yellowing, and browning of leaves.

EAB, which is native to Asia, was first discovered in the U.S. in 2002 in southeastern Michigan. It was found in Windsor, Ontario, the same year. This beetle infests and kills all North American ash species (Fraxinus sp.) including green, white, black, and blue ash.

For more information about emerald ash borer, visit DEC’s website. Any signs of EAB attack on ash trees outside of the existing Restricted Zone should be reported to DEC’s Forest Health Information Line toll-free at 1-866-640-0652.

— New York State Department of Environmental Conservation

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